Final answer:
When a bike accelerates from rest, it gains kinetic energy. Some of this energy is converted into thermal energy due to wind resistance, a form of energy. The concept of energy transformation and dissipation is also demonstrated in vehicles, where kinetic energy is lost as thermal energy through friction and air resistance, highlighting the conversion between different forms of energy.
Step-by-step explanation:
As the bike accelerates from rest, it gains kinetic energy. Some of this energy is converted into thermal energy due to wind resistance, a form of energy dissipation. In physics, energy transformations are a central concept, and the example of a bike accelerating and facing resistance showcases the conversion of kinetic energy into other forms.
Similarly, when a car is in motion, various energy conversions and transfers occur. The car's engine converts the chemical energy of the fuel into mechanical energy, propelling the car forward, which is kinetic energy. However, due to inefficiencies and external forces like friction, a significant amount of this energy is lost as thermal energy. This can be seen as heat produced by the engine, brakes, and even the tires.
During energy conversions, not all the kinetic energy is retained for the vehicle's motion; some of it is inevitably transformed into thermal energy due to friction and air resistance. For instance, as the car climbs a mountain, it converts some of the chemical energy into gravitational potential energy. If the car coasts down a hill and comes to a stop, its kinetic energy is transformed into thermal energy through brake friction, rising the temperature of the brakes.